I have said it before and I will say it again. The Lady Galadriel had a young face; you would be perfect in the part with your complexion and golden hair. If they ever make the Silmarillion into a film, you should audition. On your looks alone, in that outfit, you would walk it,.
Lol I'm not so great on the cosplay construction part of it yet (i'm only like a Journyman level), but as far as the make up and modeling sides of it are concerned, sure! Just shoot me a note if you have a specific question